【摘要】 Ｆ改性的γＡｌ２Ｏ３（Ｆ／Ａｌ２Ｏ３）广泛用作加氢、裂化和异构化等反应的催化剂或载体［１］．在γＡｌ２Ｏ３表面引入氟能显著改善其对上述反应的催化活性，并影响金属组分在γＡｌ２Ｏ３载体上的分散状态及相互作用．但迄今为止，文献中对氟的作用仍众说纷纭...更多还原

【Abstract】 Roles of fluorine in sulfided NiW/ γ Al 2O 3 catalysts were studied by XPS and TFD. It was found that fluorine improves the reducibility sulfidability of tungsten species and changes the state of nickel species in the sulfided NiWF/ γ Al 2O 3 catalyst, thus to promote HDS and HDN activity of the catalyst. Fluorine can also improve the ability for hydrogen chemisorption on the catalyst.更多还原